Ah, I understand. Try this (conceptually). You will need to replace the read/write nodes with the actual nodes and data, but the principle here is to show you that you want to start up an event that constantly reads from the file (given a delay between reading) and compare the contents of the file to previously stored contents. If the contents have changed, process the change, set the change to the current contents, and read again.
I forgot to wire up the “process your array” node back up to the CheckNewContents event. You’ll need to do that.
